Change 1 4-12.3
4-12.1 REPLACING THE COVER ASSEMBLY FOR MODEL 471012 (Continued)
e. Replacing the Pressure Relief Valve.
The pressure relief valve consists of a valve body, an inlet port, a valve
spring and ball (the latter two items located inside the valve body), and
an "0" ring installed between the valve body and the top surface of the
(1) While securing the inlet port (1) with a screwdriver, unscrew the valve body (3), taking care to
set aside the "0" ring (not visible, goes between the valve body and the lid), ball, and spring.
If the "0" ring has been damaged or shows signs of wear, replace it with
a new one.
f. Installing the Pressure Relief Valve.
(1) Install the spring and ball (1) inside the valve body (2).
(2) Install the O ring between the valve body (2) and the top surface of the lid.
g. Removing the Lid Gasket.